The most common reasons are a backed up sewer cracked or rotted pipes that leak clogged drains pipe connections are too loose the vent pipe is backed up or too short there is an old wax ring or a dry trap.
Dry trap on second floor causing smell downstairs.
The smell seems to be like a sewer gas vent leak smell you encounter with a dry trap.
Identifying the cause of the odor helps you determine its source.
Tracking down the sewer smell sewer gas odors can be caused by different factors and getting rid of them requires a bit of logical detective work.
Determining the cause of the sewer smell can help you prevent it from returning in the future.
Dry air might just be the cause of that unpleasant rotten egg smell in your home.
Sure you could find it in other places but you ll typically find them in these couple rooms.
Water in any trap under unused drains will eventually evaporate.
2nd story has 2 bathrooms downstairs has the kitchen and 1 bathroom.
Finding the source of the basement smell.
Also run your hand along the length of the pipe to detect any moisture.
The apartment is in the second floor at one corner of the building.
In some areas it can take three to five months without use for water within the p trap to dry out and allow the sewer gasses to flow inside.
Well let s dive in to the world of dry traps and floor drains.
An empty or dried out p trap is the most common cause of sewer gas smells.
It s a drain in your floor usually found in store rooms washrooms loading docks and hallways.
The p trap and the floor drain.
I live in a 2 story house.
A floor drain is pretty self explanatory.
Upon inspection the homeowner might find the source of the smell is coming from a lesser used sink shower floor drain toilet or laundry.
Check for standing water on the floor or cabinet base beneath the u shaped pipe the p trap under the sink.
However every drain must have a properly vented p trap.
The strong smell can quickly fill your bathroom with an unpleasant odor.
While it may smell dangerous the sewer smell usually consists of problem that you can fix yourself.
Maybe the trap is just drying out from not being used.
Sewer odor in bathrooms has several different causes.
Sewer gas sulphur odor leak discovery cause repairs where a basement or crawl space floor drain or drain trap is the problem.
Such as on a floor drain shower or toilet.
If you notice a foul sewer smell in your house or basement here are the five possible causes in order of probability.
Especially during winter a p trap can dry up and allow sewer gas to enter the home.
A sewer gas smell is coming from a p trap that has lost its water for some reason.
Floor drain sewage odor problem troubleshooting.
The house is connected to the city sewer.
How to diagnose basement or crawl space sewer odors due to a floor drain diagnosing repairing cast iron drain connection leak problems diagnosing sewer gas odors traced to plumbing drain deterioration questions.